A Container Contains 200 ML of 100% Proof Alcohol I

question 87

Multiple Choice

A container contains 200 mL of 100% proof alcohol i.e., it has 50% ethyl alcohol and 50% water by volume) at 20°C. How much heat is needed to bring the mixture to the boiling point of the alcohol? Assume that the specific heat in the 100% proof can be treated as due to the alcohol and water separately, and the density, boiling point, and specific heat of alcohol are 0.81 g/cm³, 78°C, and 2.4 J/gC°) , respectively.)

• A) 32,650 J
• B) 35,525 J
• C) 11,136 J
• D) 17,400 J
• E) 48,557 J

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